396722 has 8 divisors (see below), whose sum is σ = 597996. Its totient is φ = 197392.

The previous prime is 396719. The next prime is 396733. The reversal of 396722 is 227693.

396722 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 259081 + 137641 = 509^2 + 371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248 + ... + 924.

2³⁹⁶⁷²² is an apocalyptic number.

396722 is a deficient number, since it is larger than the sum of its proper divisors (201274).

396722 is a wasteful number, since it uses less digits than its factorization.

396722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its digits is 4536, while the sum is 29.

The square root of 396722 is about 629.8587143162. The cubic root of 396722 is about 73.4788067300.

Subtracting from 396722 its sum of digits (29), we obtain a palindrome (396693).

The spelling of 396722 in words is "three hundred ninety-six thousand, seven hundred twenty-two".